Home / 20,387.00-28,108.03-13,204.23

Finding the Fourth Proportional to 20,387.00, 28,108.03 and 13,204.23

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Solution

The fourth proportional to 20,387.00, 28,108.03 and 13,204.23 is: 18,204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.00 : 28,108.03 = 13,204.23 : x
  2. Step 2: Convert to fraction form
    20,387.00/28,108.03 = 13,204.23/x
  3. Step 3: Cross multiply
    20,387.00x = 28,108.03 × 13,204.23
  4. Step 4: Simplify right side
    20,387.00x = 371,144,859.96
  5. Step 5: Solve for x
    x = 371,144,859.96/20,387.00
  6. Step 6: Final answer
    x = 18,204.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.